M24: Other specific joint derangements

M24.7: Protrusio acetabuli

The two hip joints connect the pelvis to the thighbones (femurs). At each side of the pelvic bone there is a depression. This depression is also called the hip socket. The femoral head sits in the hip socket. The femoral head is the rounded, top end of the femur.

When the hip socket is deeper than normal, the head of the hip also lies deeper within the socket. This may cause you pain and you may not be able to move your leg properly.

There can be different reasons for a deep hip socket. The hip socket can be deeper than usual due to growth disorders, injuries or other disorders, for example.